Snow plow



Nov. 29, 1938. H. G. CLARK ET AL SNOW PLOW Filed July 16, 1936 2Sheets-Sheet l grvuc'vvtob WILLIAM C. 551.1.

H0 WAF'E QLELAH'K WIQMMA;

Nov. 29, 1933. H. G. CLARK ET AL.

SNOW PLOW Filed July 16, 1936 "2 Sheets-Sheet. 2

gwuc/wto'v WILLIAM E EELL .HUWAFD G. CLARK 9154 @4444 v SUM/MA,

Patented Nov. 29, 1938 UNITED STATES PATENT OFFICE Clark Arbor, Mich;said Sell assignor to said Application July 16, 1936, Serial No. 90 9223 Claims.

This invention relates to snow plows and more particularly to singlemoldboard snow plows for attachment to automobile trucks.

The present invention is an improvement over present snow plows in thatit is more sturdy, has

body not only in a vertical direction but also angularly.

Still another object is to provide an improved board.

A further object of the invention is to provide a support for the top ofthe mold board.

These and other objects will be apparent from the followingspecification when taken with the accompanying drawings in which- Fig. 1is a plan view of the snow plow together with its connecting apparatusshowing a portion of the truck to which it is secured,

Fig. 2 is a side elevation showing the snow plow, and truck in dottedoutline, v

Fig. 3 is a rear view of the moldboard and its reinforcing ribs,

Fig. 4 is a section on the line IV-'-IV of Fig. 1,

Fig. 5 is a section on the line V-V of Fig. 1,

Fig. 6 is a section on the line VI-VI of Fig. 2, and

Fig. 'I is a front elevation of the hydraulic lift and its frametogether with a diagrammatic view of the lift actuating pump.

Referring to the drawings the reference character I represents a truckto which the snow plow according to the present invention is shownsecured in operating position. The plow consists of a moldboard 2inclined laterally at an angle to the direction of motion of the truck Ito throw snow to one side of the path of the truck as it moves forward.The moldboard 2 is provided at the lower portion thereof with a pushplate 3 against which most of the push exerted by the truck is directed.The moldboard 2 has the usual forwardly concave configuration divergingfrom its inner to its outer end and is reinforced by platelike ribs 4and pairs of ribs 5 and 6 shown 50 particularly in Fig. 3. It will beobserved that three of the ribs 4 and the pairs of ribs 5 and 6 areperpendicular to the moldboard 2 whereas two of the ribs l are notperpendicular. Those not perpendicular are parallel to the line oi. mo-

38 tion of the plow. Each of the reinforcing ribs is mechanism foradjusting the angle of the mold' welded to the moldboard 2 and to thepush plate 3 providing a rigid structure.

The moldboard 2 is provided at its inner end with a landside or endplate I which being parallel to the direction of motion of the plow cuts5 through the snow and prevents the snow from sliding from the innerend. The moldboard 2 is also provided with a scraping blade 8 havingbeveled cutting edges 9 and ID. The blade 8 is secured by bolts II tothe push plate 3 and may 10 be reversed so that when one cutting edge isdulled the other may be used.

In operating a snow plow it is desirable to be able to adjust the angleof its moldboard to the ground so that with a light snow for instance it15 may be inclined sharply to throw the snow further to the side,whereas with a heavy snow where a sharp inclination to the ground wouldresult in too great a resistance, the inclination may be made lesssharp. The present snow plow pro- 20 vides for such adjustments of themoldboard inclination by the design of both the pushing frame work andof the shoes on which weight of the plow is carried. I

The shoes 15 which support the weight of the 25 plow comprises runnersl6 to each of which is rigidly secured a pair of eyes l'I. Pinned toeach eye I! to provide a hinged connection is a clevis l8 havingthreaded rods iii. The rods l9 project upwardly through suitableopenings in shoe supporting plates 20 comprising rearward projectionsfrom the push plate 3 and are secured therein in adjusted position bynuts 2| threaded thereon and clamping between them the plates 20. Thuswhen the inclination of the moldboard 2 to the 35 ground is changed theshoes l5 may have their inclination changed by manipulation of the nuts2| on the threaded rods l9 to maintain the shoes l5 parallel to theground.

The pushing frame is hingedly connected to the moldboard at four pointsdefined by four pairs of spaced plates 25, 26,21 and 28 welded to theunder side of the push plate 3 as shown particularly in Figs. 3 and 5.Pinned between the pairs 45 of spaced plates 25, 26, 21 and 28 are theouter ends of frame members 29, 30, 3| and 32, respectively, theopposite or inner ends of which converge at the point 33. Adjacent theouter ends of the members 29, 30, 3| and 32 is secured a laterallyextending frame member 34 for rigidly positioning them in fixedrelation. An additional reinforcing frame member 35 extends from theouter end of the member 30 to an intermediate portion of the member 23.Suitable gusset plates 36 and 31 are disposed at the intersections ofthe members 29 and 35, and 36 and 3|.

In order to fix the correct pivotal or angular relation between themoldboard 2 and the frame members 29, 30, 3| and 32 and to provide asupport for the upper portion of the moldboard 2, extensible members 40are provided which are in effect turnbuckles having lock nuts 4|. Themembers 40 are pivoted between the pairs of reinforcing ribs 5 and 6 topairs of ears 42 and 43 on the upper portions thereof and to framemembers 44 and 45 extending between intermediate portions of the members29 and 36, and 3| and 32.

It will be clear that to sharpen the angle of inclination of themoldboard 2 to the ground it will merely be necessary to increase thelength of the members 40 and to adjust the angular relation of the shoes|5 accordingly.

For pushing the snow plow the truck I is provided with push bars 46.-The rear end of each push bar is provided with a clamp 41 for securingthe push bars to the rear axial or banjo housing of the truck I. Theforward ends of the push bars 46 rest in cradles 48 which are suspendedfrom and held against the lower side of the front axle of the truck I bychains 49. The push bars 46 are of telescopic construction in order thatthe length may be adjusted to adapt them with the truck on which theyare used and the adjustment is secured by collars 50.

The forward ends of the push bars 46 are provided with radiallyextending flanges 55 as shown particularly in Figs. 2 and 6. Abuttingagainst the radially extending flanges 55 is an angle bar 56 havingportions thereof extending rearwardly over the radially extendingflanges 55 and a portion of the push bars 46. The push bars 46 aresecured to the angle bar 56 by split collar blocks 51 fitting snuglyagainst the rearward side of the radially extending flanges 55 and aresecured by bolts 58 to the overhanging portion of the angle bar 56. Theresult is that the angle bar 56 is rigidly and securely fixed to theends of and spaces the push bars 46.

The plow is secured to the angle bar 56 by a bolt 59 passing through thecentral portion of a coupling member 60, see Figs. 1 and 6, and thecentral portion of the forward vertical portion of the angle bar 56. Thecoupling member 66 has at its outer ends pairs of forwardly extendingears 6|. Between the ears 6| are pivoted rearward extensions 62 of theframe members 35 and 3|.

From the foregoing description it will be clear that the connectionprovided by the bolt 59 permits rocking movement of the plow laterallywhile the connection provided by the ears 6| and the rearward extensions62 permits rocking moved over an uneven surface. It will be observedfrom Fig. 1 that the frame members 35 and 3| extend parallel to the pathof movement of the plow and are in alignment with the push bars 46. Thisconstruction permits a straight line of force directly from the rearaxle of the Igruck I: to the push plate 3 secured to the mold oard Whenmoving the snow plow from one location to another or when moving it whenthere is no snow on the ground it is desirable that the shoes l5 beraised from contact with the ground. This raising is accomplished by ahydraulic lift 65 mounted in a frame III which is in turn mounted on thebumper 1| of the truck I shown particularly in Fig. 7. Adiagrammatically shown handpumping mechanism 66 is disclosed. Preferablya hand pumping mechanism is disposed in the cab of the truck althoughany suitable actuating device may be used. The lower portion of theframe 10 is formed from an angle bar 12 having a vertical depending sidewhich is secured by bolts 13 to the bumper 1|. The angle bar 12 also hasa horizontal portion which overlies the bumper 1| and supports theweight of the frame Ill and lift 65. Mounted on the lower side of theframe 16 preferably to the horizontal portion of the angle bar 12 aresheaves 74. Also mounted in the frame 19. but to the upper portionthereof are sheaves 75. A sheave 16 is mounted on the end of the pistonrod Tl of the hydraulic lift 65. Passing over the sheave '|6 around thesheaves 14 and 15 is a cable 16 having the ends thereof secured to theframe members 35 and 3| by clevises 19. In order to counteract theweight of the plow tending to move the frame 10 forwardly there areprovided tie rods 89 suitably secured to ears 6| projecting from theupper sides of the frame 16 and from the frame of the truck I at aposition adjacent the forward end of the truck cab.

It will be apparent from the foregoing description that the hydrauliclift together with the plow and its push bars may be readily and simplysecured to a truck for operation thereby .and that by actuation of thehydraulic lift 65 the entire plow and its framework may be lifted fromthe ground in order that the same may be readily transported from onelocation to another. As shown the frame members are for the most part inthe form of angle bars. While this construction has been found to bevery desirable other suitable structural members may, of course, beused.

Having thus described my invention what we desire to secure by LettersPatent and claim is:

1. A snow plow comprising a moldboard having a blade, a frame pivotallyconnected to said oldboard, means to adjust the angular relation betweensaid frame and said moldboardeach having a substantially flat groundcontacting surface for directly supporting said nism associated witheach of said supports for securing said shoes to and for positivelyadjusting the angularity of said shoes with respect to said snow plowbody.

3. In combination with a snow plow body, a runner, forward and rearbolts pivoted to said runner, and nuts on said bolts to adjustablysecure said bolts to the body whereby the angularity of said shoe to thebody may be adjusted.

HOWARD G. CLARK. WILLIAM C. SELL.

